Ore smelting and converting furnace



ORE SMELTING AND CONVERTINGFURNACE Filed June 22, 1956" s Sheets-Sheet 1 I/VVE/VTOR.

Oct. 6, 1936.

J. ANSON ORE SMELTING AND CONVERTING Filed June FURNACE 3 Sheets-Sheet 2 INVE NTOR.

H 7 TOR/VEY- I J. ANSON 2,056,499

ORE SMELTING AND CONVERTING FURNACE Filed June 22, 1936 3 Sheets-Sheet '3 I N V 1V TOR. JOHN HMS o/v.

dill

meat orris our: ems AND co user.

a, run

John on, San To, @aliii.

[application June 22, M36,

This invention relates to a novel ore smelting and converting furnace, including a novel arch construction within the furnace whereby high temperatures are obtained for the purpose of smelting ores.

Another object is to provide a furnace of the character stated which is emcient and effective in operation.

Still another object is to provide a i m. including a novel means of feeding the ore onto the bed in the furnace.

A further object is to provide a novel means or preheating air and introducing the heated air "into the furnace, thereby increasing the heat emciency of the furnace.

A ieature of my invention resides in the novel means of adjusting the height of the ore bed to satisfy varying conditions.

Another feature of my invention is to provide a dust mufie in combination with the furnace,

said muffle being heated by the gases in the 'lurnace.

other objects, advantages and features of invention may appear from. the accompanying drawings, the subjoined detailed description, and

the appended claims.

In the drawings: I

Figure l is a longitudinal sectional view furnace.

Figure 2 is a transverse sectional view on line 2---@ of Fig. l. r

of my taken Figure 3 is a transverse sectional view taken on line 3-3 of Fig. 1.

Figure 4. is a longitudinal sectional view of one of the water cooled or feed pipes.

Figure 5 is an end view of the same.

Referring more particularly to the drawings. my furnace l is positioned substantially at the ground level, and a suitable housing (not shown) is erected around the furnace. charging floor 2 above the iurnace, from the ore is charged into the furnace, as will be.

further described.

The walls of the furnace are The housing includes a which constructed oi suitable material such as a reiractorybriclt and I have found that magnesite fire brick is very effective to line the inside of the furnace and the outlet duct therefrom.

The furnace includes a front wall it, a rear wall" d and side walls ti. The ore chamber-t in the U adis inand rearwardlyior the purthe oil burner and fed back into the ore .chber of the iur- --nace thereby saving additional heat units.

.lcottorn, sides and back metal. The dust chber is shown, and subsequently described.

An arch it extends forwardly from the rear wall of the furnace, leaving a gas outlet space it from the ore chamber 6 into the exhaust chamber ii. A bame wall it is provided adjacent the rear end of the exhaust chamber it. This baiile wall constricts the outflow of hot gases and causes these gases to impinge upon the top wall of the arch it and by conduction the heat is transmitted thru the arch and then radiated onto the top of the i5 ore pile. s terially increases the heat within the ore chamber 6}. The outlet duct it or the furnace extends into the flue it. i

The flue Id is surrounded with the hot air jacket is and this Jacket is supplied with air m under pressure thru the pipe it from a blower or pp (not shown). The maniloldpipes ll carry the air irom the jacket it to the tuyeres it. Thus, hot air is drawn from around the staclr ill A pipe it extends from the iaclret it to the burner it, thus carrying hot air into the burner for atomization purposes. A muiiie it is built into the furnace at the front end thereof and above SQ) the ore chamber 6. The hot gases pass over the r of the mufle, as will. be evident from Figs. 1 and 3; A dust chamber 26 is mounted on top of the furnace and'the duct 22 12,0. 1' 1 ts the gases and one particles from the muifie to thedust chamber. The purpose or the muide is to separate certain more volatile metals from the agglomerate mass which might be drawn from the lace. Zinc and lead, for example, would pass into the dust chamber 2i and would thus be separated from the we of the also surrounded with is connected to the an air jacket (23 which jacket pipe is thruthe pipe 2t.

Ore is charged into the cber t thru a pin up -rality of pipes it. These pipes extend upwardly thru the charging floor i, and hoppers it enable ore to be spilled. into these pipes 2t and thence into the furnace. The height of the ore body in the chamber t is controlled by the height of up the pipes 26 above the floor or the ore chamber. These pipes can be moved vertically in the lurnace by means'of jacks, or the like, 26 onthe charging'floor 2. Thus, by raising or lowering the pipes 24, the depth oi the ore w in the furs5 nace can be varied. If the ore body extends above the tuyeres I8 and if air is being forced thru these tuyeres, the upper part of the ore body being heated, will be agitated and oxidized. Thus, rock wool can be formed and collected from the slag hole 21. Metal is collected out of the hole 28 in the rear wall of the furnace.

The manifold I1 is provided with suitable valves 29 so that hot air can be admitted at will into the furnace. The portion of the ore charging pipes 24 within the furnace is preferably provided with a water jacket 38. Water extends into the jacket and adjacent the bottom thereof thru the water pipe 3|. Ore is continuously fed into the furnace, the slag being drawn oil at 21 while.

the ore is collected at 28.

Having described my invention, I claim:

1. An ore smelting and converting furnace having an ore chamber and an exhaust chamber, an arch separating the ore chamber from the exhaust chamber, an oil burner extending into the front end of the ore chamber, a slag outlet and an ore outlet extending from the ore chamber, a plurality of ore charging pipes extending vertically into the furnace and into the ore chamber, and means to vertically adjust said ore charging pipes.

2. An ore smelting and converting furnace having an ore chamber and an exhaust chamber, an arch separating the ore chamber from the exhaust chamber, an oil burner extending into the front end of the ore chamber, a slag outlet and an ore outlet extending from the ore chamber,

a plurality of ore charging pipes extending vertically into the furnace and into the ore chamber, a stack extending from the furnace, a hot air jacket surrounding the stack, said ore chamber having tuyeres extending into it, and manifolds extending from the hot air jacket, to the tuyeres.

3. An ore smelting and converting furnace having an ore chamber and an exhaust chamber, an arch separating the ore chamber from the exhaust chamber, an oil burner extending into the front end of the ore chamber, a slag outlet and an ore outlet extending from the ore chamber, a plurality of ore charging pipes extending vertically into the furnace and into the ore chamber, means to vertically adjust said are charging pipes, a stack extending from the furnace, a hot air jacket surrounding the stack, said are chamber having tuyeres extending into it, and manifolds extending from the hot air jacket to the'tuyeres.

4. An ore smelting and converting furnace having an ore chamber and an exhaust chamber. an

arch separating the ore chamber from the exhaust chamber, an oil burner extending into the front end of the ore chamber, a slag outlet and ing an ore chamber and an exhaust chamber,

an arch separatingthe ore chamber from the exhaust chamber, an oil burner extending into the front end of the ore chamber, a slag outlet and an ore outlet extending from the ore chamber, a plurality of ore charging pipesv extending verhaving an ore chamber adjacent the bottom thereof, an exhaust chamber adjacent the top thereof, an arch separating the ore chamber and the exhaust chamber, a baffle wall adjacent the rear end of the exhaust chamber, a. stack extending from the rear of the exhaust chamber, said ore chamber having a slag outlet and a metal outlet, a plurality of ore charging pipes extend ing vertically into the ore chamber, an oil burn er extending into the ore chamber, and means to vertically adjust the ore charging pipes.

7. An ore smelting and converting furnace having an ore chamber adjacent the bottom thereof, an exhaust chamber adjacent the top thereof, an arch separating the ore chamber and the exhaust chamber, a baflie wall adjacent the rear end of the exhaust chamber, a stack extending from the rear of the exhaust chamber, said ore chamber having a slag outlet and a metal outlet, a plurality of ore charging pipes extending vertically into the ore chamber, an oil burner extending into the ore chamber, means tc vertically adjust the ore charging pipes, a water jacket surrounding the ore charging pipes and means to circulate water in the water jacket.

8. An ore smelting and converting furnace having an ore chamber adjacent the bottom thereof, an exhaust chamber adjacent the top thereof, an arch separating the ore chamber and the exhaust chamber, a baflle wall adjacent the rear end of the exhaust chamber, a stack extending from the rear of the exhaust chamber, said ore chamber having a slag outlet and a metal outlet, a plurality of ore charging pipes extending vertically into the ore chamber, an oil bumer extending into the ore chamber, means to vertically adjust the ore charging pipes, a hot air-jacket around the stack, said are chamber having a plurality of tuyeres therein, and manifolds extending from the hot air jacket to the uyres.

9. An ore smelting and converting furnace having an ore chamber adjacent the bottom thereof, an exhaust chamber adjacent the topthereof, an arch separating the ore chamber and the exhaust chamber, a baiiie wall adjacent the rear end of the exhaust chamber, a stack ex- 1 tending from the rear of the exhaust chamber, said ore chamber having a slag outlet and a metal outlet, a plurality of ore charging pipes extending vertically into the ore chamber, an oil burner extending into the ore chamber, means to vertically adjust the ore charging pipes, a water jacket surrounding the ore charg-- jacket'to'? 4 smelting and converting furnace 10. An ore having an ore chamber adjacent the bottom thereof, an exhaust chamber adjacent the top thereof, an arch separating the ore chamber and i the exhaust chamber. a baile wall adjacent the aouacee rear end of the exhaust chamber, a stack extending from the rear of the exhaust chamber, said ore chamber having a slag outlet and a metal outlet, a plurality of ore charging pipes extending vertically into the ore chamber, an oil burner extending into the ore chamber, means to vertically adjust theore charging pipes, a muiile in the front end of the furnace above the ore chamber, and a dust chamber connected to the muille, said dust chamber being mounted on the furnace.

11. An ore smelting and converting furnace having an we chamber adjacent the bottom thereof, an exhaust chamber adjacent the top thereof, an arch separating the ore-chamber and the exhaust chamber, a baifle wall adjacent the rear end of the exhaust chamber, a stack extending from the rear of the exhaust chamber, said ore chamber having a slag outlet and a metal outlet, a plurality of ore charging pipes extending vertically into the ore chamber, an oil burner extending into the ore chamber, means to vertically adjust the ore charging pipes, a'water jacket surrounding the ore charging pipes and means to circulate water in the ,waterjacket, a muille in the exhaust chamber, a

the front end of the furnace above the ore chamber, a dust chamber connected to the muille, said dust chamber being mounted on the furnace.

12. An ore smelting and converting furnace having an ore chamber adjacent the bottom thereof, an exhaust chamber adjacent the-top thereof, an arch separating the ore chamber and baiile wall adjacent the rear end of the exhaust chamber, a-stack extending from the rear of the exhaust chamber, said ore chamber having a slag outlet and a metal outlet, a plurality of ore charging pipes extending vertically into the ore chamber, an oil burner extending into the ore chamber, means to vertically adjust the ore charging pipes, a water jacket surrounding the ore charging pipes, means to circulate water in the water jacket, a hot air jacket around the stack, said ore chamber having a plurality of tuyeres therein, manifolds extending from the hot air jacket to the tuyeres, ,a muilie in the front end of the furnace above the ore chamber and a dust chamber connected to the muflle, said dust chamber being mounted on the furnace.

JOHN ANSON. 

